Y. Hashim, Aqeel., Jassim. M. Al-Asadi, and Wathiq A. Taha. 2009. “Experimental Investigation of Symmetrical Double Slope Single Basin Solar Stills Productivity With Different Insulation”. Journal of Kufa-Physics 1 (2). https://journal.uokufa.edu.iq/index.php/jkp/article/view/7525.